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Global Climate Change Digest
A Guide to Information on Greenhouse Gases and Ozone Depletion
Published July 1988 through June 1999

FROM VOLUME 2, NUMBER 5, MAY 1989

PROFESSIONAL PUBLICATIONS...
OF GENERAL INTEREST

Item #d89may24

"Changes of Tropical Sea-Air Interaction Processes over a 30-Year Period," H. Flohn (Meteor. Inst., Univ. Bonn, Auf dem Hügel 20, D-5300, Bonn, FRG), A. Kapala, Nature, 338(6212), 244-246, Mar. 16, 1989.

Reports investigations on sea-air interaction processes along the main shipping routes of equatorial oceans over the period 1949-1979. Results indicate an intensification of the hydrological cycle, especially over the warmest oceans, and also suggest tropical circulation changes. As the sea-air fluxes of CO₂ and H2O are linked, these results suggest that the man-made increase in the atmospheric CO₂ concentration could be the primary trigger of a chain of processes within the tropical branch of the climate system, and intensification of the cycle could be considered a signal of global warming.

Item #d89may25

"Implications of a Global Climatic Warming for Agriculture: A Review and Appraisal," B. Smit (Dept. Geog., Univ. Guelph, Guelph, Ont. N1G 2W1, Can.), L. Ludlow, M. Brklacich, J. Environ. Qual., 17(4), 519-527, Oct.-Dec. 1988.

Classifies and reviews those studies examining implications of climatic warming, recognizing three approaches: crop yield analysis, spatial analysis and agricultural systems analysis. Much remains to be learned, but current evidence suggests that a warmer climate could create a more favorable environment for wheat and grain corn in Canada, northern Europe and the U.S.S.R. and restrict opportunities in the United States. Extensive reference list included.

Item #d89may26

"Chlorofluorocarbons, Stratospheric Ozone, and the Antarctic `Ozone Hole,'" F.S. Rowland (Dept. Chem., Univ. Calif., Irvine CA 92717), Environ. Conserv., 15(2), 101-115, Summer 1988.

A detailed review that discusses 1) scientific background and status of current investigations, 2) the major technological uses of CFCs and available or foreseeable alternatives to them, and 3) the policy status and regulatory activity involving present or proposed future restrictions of CFC emissions. Extensive reference list.

Item #d89may27

"Climatic Response to Large Atmospheric Smoke Injections: Sensitivity Studies with a Tropospheric General Circulation Model," S.J. Ghan (Lawrence Livermore Nat. Lab., Univ. Calif., POB 808, Livermore CA 94550), M.C. MacCracken, J.W. Walton, J. Geophys. Res., 93(D7), 8315-8337, July 20, 1988.

Couples a tropospheric general circulation model with a Lagrangian trace species transport and removal model to determine the climatic response to continental-scale smoke injections, such as would result from a nuclear war. Considers a variety of sensitivity experiments such as sensitivity to the mass, location, day, season, duration, altitude, composition and size distribution of the smoke injection. Found, for example, that the assumed initial aerosol size distribution of injection plays an important role in determining climatic response. Also discusses the importance of various feedback processes.